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lunes, 17 de agosto de 2026

Acute Odontogenic Infection in Children: Clinical Guide

Acute Odontogenic Infection

Acute odontogenic infections in children are common dental emergencies that may originate from pulpal, periapical, periodontal, or other dental tissues.

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Their clinical presentation ranges from localized pain and intraoral swelling to facial cellulitis, systemic involvement, and potentially life-threatening airway compromise.

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Management should not be based on antibiotics alone. The primary objective is to identify and control the source of infection, using pulp therapy, extraction, drainage, or a combination of these approaches when indicated.
Systemic antibiotics are adjunctive therapy, particularly when infection has spread beyond the immediate dental tissues or systemic signs are present.

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1. Diagnosis of Acute Odontogenic Infection
Diagnosis begins with a focused history and clinical examination.

Important considerations include:
▪️ Onset and progression of pain or swelling
▪️ Fever or malaise
▪️ Facial asymmetry
▪️ Lymphadenopathy
▪️ Trismus
▪️ Dysphagia or odynophagia
▪️ Difficulty breathing
▪️ Dental caries or previous dental treatment
▪️ Pulpal and periapical findings
▪️ Medical history, allergies, medications, and recent antibiotic exposure
Radiographs can help identify the source of infection and its relationship to developing permanent teeth. In more extensive infections, additional imaging such as ultrasound or computed tomography may be indicated. Laboratory tests, including a complete blood count, inflammatory markers, or microbiological testing, are generally reserved for selected cases rather than uncomplicated localized infections.

Clinical Classification
Clinical Presentation Typical Findings Management Priority
Localized odontogenic infection Localized pain, tenderness, or intraoral swelling without systemic signs Definitive dental treatment and drainage when indicated
Facial cellulitis or progressive swelling Diffuse swelling, facial asymmetry, possible lymphadenopathy or trismus Urgent source control; systemic antibiotics may be indicated
Systemic involvement Fever, malaise, tachycardia, significant lymphadenopathy or progressive infection Urgent dental and medical management with appropriate systemic antimicrobial therapy
Airway or deep-space involvement Dysphagia, respiratory difficulty, severe trismus, rapidly progressive swelling Emergency referral and hospital-based management
2. Clinical Presentation
The clinical spectrum depends on the location and extent of infection.
A localized infection may present with tooth pain, percussion sensitivity, localized swelling, or a draining sinus tract. As infection spreads through the surrounding tissues, swelling may become diffuse and extend into the face or neck.

The following findings should raise concern for a more serious odontogenic infection:
▪️ Progressive facial swelling
▪️ Fever or systemic malaise
▪️ Significant trismus
▪️ Dysphagia
▪️ Difficulty breathing
▪️ Tachycardia
▪️ Rapid progression
▪️ Swelling involving the floor of the mouth or neck
Airway compromise and respiratory distress are emergency findings and require immediate medical management rather than routine outpatient dental treatment.

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3. Definitive Dental Management
The most important therapeutic principle is source control.

Depending on the tooth and stage of infection, treatment may include:
▪️ Pulpotomy or pulpectomy when the primary tooth can be appropriately treated.
▪️ Root canal treatment for a suitable permanent tooth.
▪️ Extraction when the tooth is non-restorable, has an unfavorable prognosis, or extraction is the appropriate method of eliminating the infectious focus.
▪️ Incision and drainage when a drainable collection is present.
AAPD guidance emphasizes that antibiotics should be used as an adjunct to definitive dental treatment, not as a substitute for pulp therapy, extraction, or drainage.
For a localized infection without fever or facial swelling, systemic antibiotics generally provide little benefit because the infection remains primarily localized to the dental tissues.

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4. Pharmacological Management
Antibiotics
Antibiotic stewardship is particularly important in children. Antibiotics should be prescribed only when there is a clear indication, taking into account the child's weight, age, allergy history, medical status, previous antibiotic exposure, and severity of infection.
For acute facial swelling of dental origin with progressive or systemic involvement, penicillin derivatives remain important empirical options. The current AAPD guidance identifies amoxicillin as a first-choice agent for children without penicillin allergy.

Common Pediatric Regimens
The following doses reflect AAPD's Useful Medications for Oral Conditions and should be interpreted as reference dosing rather than a substitute for patient-specific prescribing.
Medication Pediatric Reference Dose Clinical Consideration
Amoxicillin 20–40 mg/kg/day every 8 hours, or 25–45 mg/kg/day every 12 hours in children <40 kg Common first-line option when there is no relevant penicillin allergy
Amoxicillin–clavulanate 25–45 mg/kg/day based on the amoxicillin component, divided every 12 hours Useful when broader coverage is clinically justified; use the lowest appropriate clavulanate exposure
Azithromycin 10–12 mg/kg on day 1, followed by 5–6 mg/kg once daily for the remaining treatment period Alternative when a clinically significant β-lactam allergy limits preferred agents; consider QT-risk factors
Metronidazole 10 mg/kg/dose every 8 hours in selected oral infections May be used as adjunctive anaerobic coverage when clinically indicated; not routine monotherapy
| Important: Antibiotic selection and dosing must be individualized. Severe infections, immunocompromised patients, significant drug allergies, previous treatment failure, and suspected resistant organisms may require specialist or hospital-based management.
Recent evidence also indicates that antibiotic prescribing in pediatric apical periodontitis and acute periapical abscess remains inconsistent, with substantial use even when guidelines do not recommend systemic antibiotics. This reinforces the importance of source control and antimicrobial stewardship.

Analgesic Therapy
Pain control should accompany definitive treatment when pain is present.
Ibuprofen and acetaminophen are established first-line pharmacological options for acute pediatric dental pain, with dosing based on the child's age, weight, medical history, and contraindications. Opioid-containing analgesics should not be considered first-line therapy in children.

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5. When Is Hospital Referral Necessary?
A child should be considered for urgent medical or hospital-based evaluation when there is evidence of significant spread or potential airway compromise.

Particularly concerning findings include:
▪️ Difficulty breathing
▪️ Difficulty swallowing
▪️ Progressive neck or facial swelling
▪️ Severe trismus
▪️ Rapidly spreading infection
▪️ Systemic toxicity or significant malaise
▪️ Dehydration or inability to maintain oral intake
▪️ Failure to respond to appropriate initial management
▪️ Significant medical comorbidity or immunocompromise
In these circumstances, management may require intravenous antibiotics, advanced imaging, surgical drainage, airway assessment, and treatment under hospital supervision.

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💬 Discussion
The management of acute odontogenic infection in children requires a distinction between the infection itself and the need for antimicrobial medication.
The central treatment is elimination of the infectious source. Antibiotics become particularly important when the infection extends beyond the immediate dental tissues, produces systemic manifestations, or presents with progressive facial swelling.
This distinction is clinically important because unnecessary antibiotic prescribing exposes children to adverse reactions and contributes to antimicrobial resistance. A 2026 systematic review found substantial variability in antibiotic prescribing for pediatric apical periodontitis and acute periapical abscess, with inappropriate prescribing remaining a significant concern.
Therefore, a prescription should not delay drainage, pulp therapy, extraction, or other definitive treatment when these procedures can safely be performed.

🎯 Clinical Recommendations
1. Assess the child's airway and systemic status first when facial swelling is present.
2. Identify the dental source before selecting antimicrobial therapy.
3. Treat the source with pulp therapy, extraction, and/or drainage as clinically indicated.
4. Reserve systemic antibiotics primarily for spreading infection or systemic involvement, rather than uncomplicated localized dental disease.
5. Use weight-based pediatric dosing and document allergies, recent antibiotic exposure, and relevant medical conditions.
6. Reassess children with significant infections promptly; lack of clinical improvement should trigger diagnostic and therapeutic reassessment.
7. Refer urgently when there are signs of airway compromise, deep-space infection, or severe systemic involvement.

✍️ Conclusion
Acute odontogenic infection in children requires rapid clinical assessment, accurate diagnosis, and definitive control of the dental source. Antibiotics have an important but selective role and should generally complement, rather than replace, dental treatment.
For pediatric patients, the safest evidence-based approach combines early source control, appropriate drainage, rational antibiotic selection, weight-based pharmacology, effective pain management, and timely referral when the infection is spreading or threatens the airway.

📚 References

✔ American Academy of Pediatric Dentistry. (2026). Use of antibiotic therapy for pediatric dental patients. In The Reference Manual of Pediatric Dentistry. American Academy of Pediatric Dentistry.
✔ American Academy of Pediatric Dentistry. (2025). Useful medications for oral conditions. In The Reference Manual of Pediatric Dentistry. American Academy of Pediatric Dentistry.
✔ American Academy of Pediatric Dentistry. (2025). Management considerations for pediatric oral surgery and oral pathology. In The Reference Manual of Pediatric Dentistry. American Academy of Pediatric Dentistry.
✔ American Academy of Pediatric Dentistry. (2026). Acute pain management for pediatric dental patients. In The Reference Manual of Pediatric Dentistry. American Academy of Pediatric Dentistry.
✔ American Academy of Pediatric Dentistry. (2026). Policy on emergency oral care. In The Reference Manual of Pediatric Dentistry. American Academy of Pediatric Dentistry.
✔ Machuca-Portillo, C., Suárez-Marchena, C., Chandler-Gutiérrez, L., Barra-Soto, M. J., López-Del Valle, L., Segura-Egea, J. J. (2026). Antibiotic prescribing practices for apical periodontitis and acute periapical abscess in children: A systematic review and meta-analysis. Journal of Clinical Medicine, 15(10), 3874. https://doi.org/10.3390/jcm15103874
✔ Ramos-Gomez, F., & Crystal, Y. O. (2018). The use of antibiotics in odontogenic infections: What is the best choice? A systematic review. Journal of Oral and Maxillofacial Surgery, 76(1), 54–62.
✔ Siqueira, J. F., Jr., & Rôças, I. N. (2021). Present status and future directions: Microbiology of endodontic infections. International Endodontic Journal, 54(9), 1529–1548.

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5 Wisdom Teeth Myths You Should Know

Wisdom Teeth

Wisdom teeth, also called third molars, are the last permanent teeth to develop and usually emerge between the late teens and early twenties. Because they often become impacted or cause dental problems, many beliefs have developed about when they should be removed.

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But not every wisdom tooth needs extraction. Current evidence supports evaluating each tooth according to its position, symptoms, surrounding tissues, risk of disease, and the patient's overall situation.

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Here are five common wisdom teeth myths and what the evidence actually tells us.

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Myth 1: “Everyone should have their wisdom teeth removed.”

Fact: Not necessarily.
A wisdom tooth does not automatically need to be extracted simply because it is present or impacted.
Removal is generally considered when there is disease or a significant clinical problem, such as:
▪️ Untreatable tooth decay
▪️ Infection or recurrent inflammation around the tooth
▪️ Periodontal disease
▪️ Damage to an adjacent tooth
▪️ Certain cysts or tumors
▪️ Other pathology associated with the tooth
A completely erupted, functional, healthy wisdom tooth that can be kept clean may be monitored rather than removed.
The decision should therefore be based on individual risk assessment, not a universal rule.

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Myth 2: “If my wisdom tooth doesn't hurt, it is completely healthy.”

Fact: Absence of pain does not guarantee absence of disease.
Some wisdom teeth can develop decay, periodontal problems, food trapping, or damage to neighboring teeth without causing noticeable pain.
This is particularly important with impacted third molars, because their position can make examination and cleaning difficult. Clinical examination and appropriate dental imaging can help identify problems that may not yet produce symptoms.
Therefore, “it doesn't hurt” is not the same as “there is no problem”.

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Myth 3: “Wisdom teeth always cause crowding of the front teeth.”

Fact: The evidence does not support this as a reason for routine extraction.
Lower front-tooth crowding can increase over time for several reasons, including normal changes associated with aging. Although wisdom teeth have historically been blamed for this crowding, systematic reviews have not established a clear cause-and-effect relationship.
A 2023 systematic review found no clear connection between mandibular third molars and lower incisor crowding after orthodontic treatment and concluded that the evidence does not support preventive removal solely to maintain orthodontic alignment.
Therefore, removing wisdom teeth should not be considered a reliable way to prevent future front-tooth crowding.

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Myth 4: “Wisdom teeth must be removed before age 25.”

Fact: There is no universal age at which every wisdom tooth must be removed.
Age can influence treatment decisions because surgical difficulty and postoperative complications may increase in some older patients. Recent research found higher rates of symptoms, surgical difficulty, and complications in patients over 40 compared with younger adults.
However, this does not mean that every healthy wisdom tooth should be removed before age 25.
The better approach is to assess the tooth before problems develop, particularly when imaging shows an unfavorable position or other risk factors. The patient's anatomy, disease status, ability to maintain hygiene, and potential surgical risks should all be considered.

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Myth 5: “An impacted wisdom tooth is dangerous and should always be removed.”

Fact: Impaction increases the possibility of problems, but does not automatically mean immediate extraction.
An impacted tooth may have limited space to erupt and can be associated with pericoronitis, decay, periodontal disease, damage to the second molar, or other pathology. However, the actual risk varies considerably according to its position and clinical condition.
For some patients, extraction is appropriate. For others, particularly when there is no disease and the surgical risk is significant, regular monitoring may be a reasonable option.
This is why radiographic findings should be interpreted together with the clinical examination rather than used as the sole reason for extraction.

5 Wisdom Teeth Myths vs. Facts
Myth What the Evidence Says
Everyone needs wisdom teeth removal. Healthy, functional wisdom teeth may sometimes be monitored rather than removed.
No pain means no disease. Some wisdom tooth problems can develop without noticeable pain or symptoms.
Wisdom teeth cause front-tooth crowding. A clear cause-and-effect relationship has not been established, so extraction should not be recommended solely to prevent crowding.
They must be removed before age 25. There is no universal age rule. The decision should be based on the tooth's condition, risks, and the patient's individual needs.
Every impacted wisdom tooth is dangerous. Impaction can increase the risk of problems, but management depends on the tooth's position, clinical condition, and overall risk.
💬 Discussion
The management of wisdom teeth has shifted from routine preventive extraction toward a more individualized approach. The evidence does not support removing every asymptomatic, disease-free third molar simply because it is impacted. At the same time, retaining a wisdom tooth should not mean ignoring it.
The Cochrane review found insufficient high-quality evidence to determine whether routine removal or retention is superior for all asymptomatic, disease-free impacted wisdom teeth. This uncertainty reinforces the importance of individualized assessment and shared decision-making.
Importantly, monitoring is an active management strategy, not simply “doing nothing.” Regular clinical evaluation, appropriate radiographs when indicated, and attention to changes in symptoms or surrounding teeth can help identify when treatment becomes necessary.

🎯 Clinical Recommendations
For patients with wisdom teeth, the most practical approach is:
1. Do not recommend extraction based on age alone.
2. Evaluate symptoms, eruption status, periodontal health, caries, tooth position, and adjacent teeth.
3. Use appropriate imaging when clinical findings indicate a need to assess tooth position or associated structures.
4. Consider extraction when there is established disease, significant damage, recurrent problems, or a clear clinical indication.
5. If a healthy wisdom tooth is retained, establish a follow-up and monitoring plan rather than assuming it will remain problem-free.
The key message is simple: wisdom teeth should be evaluated individually, not treated according to myths or a fixed age rule.

✍️ Conclusion
Wisdom teeth are not automatically “bad teeth,” and extraction is not automatically necessary. Some third molars cause infections, decay, periodontal problems, or damage to nearby teeth and should be treated appropriately. Others can remain healthy and functional or can be safely monitored.
Understanding these five wisdom teeth myths can help patients make better-informed decisions with their dentist or oral and maxillofacial surgeon.

📚 References

✔ Ghaeminia, H., Nienhuijs, M. E. L., Toedtling, V., Perry, J., Tummers, M., Hoppenreijs, T. J. M., van der Sanden, W. J. M., & Mettes, T. J. M. (2020). Surgical removal versus retention for the management of asymptomatic disease-free impacted wisdom teeth. Cochrane Database of Systematic Reviews, 2020(5), CD003879. https://doi.org/10.1002/14651858.CD003879.pub5
✔ Galvão, E. L., da Silveira, E. M., de Oliveira, E. S., da Cruz, T. M. M., Flecha, O. D., Falci, S. G. M., & Gonçalves, P. F. (2019). Association between mandibular third molar position and the occurrence of pericoronitis: A systematic review and meta-analysis. Archives of Oral Biology, 107, 104486. https://doi.org/10.1016/j.archoralbio.2019.104486
✔ Livas, C., & Delli, K. (2017). Does orthodontic extraction treatment improve the angular position of third molars? A systematic review. Journal of Oral and Maxillofacial Surgery, 75(3), 475–483. https://doi.org/10.1016/j.joms.2016.10.035
✔ Silva de Andrade Tutu, J., de Sousa Lopes Cascaes, P., Peralta-Mamani, M., Silveira, R. J., Soares, A. B., Cintra Junqueira, J. L., Narchini Nascimento, M. C., & Silveira Soares, M. Q. (2026). Cystic and neoplastic lesions in pericoronal follicles of asymptomatic third molars: A systematic review and meta-analysis. Journal of Oral and Maxillofacial Surgery. Advance online publication. https://doi.org/10.1016/j.joms.2026.04.015
✔ Zawawi, K. H., & Melis, M. (2014). The role of mandibular third molars on lower anterior teeth crowding and relapse after orthodontic treatment: A systematic review. The Scientific World Journal, 2014, 615429. https://doi.org/10.1155/2014/615429
✔ American Association of Oral and Maxillofacial Surgeons. (2024). The management of impacted third molar teeth. AAOMS.
✔ National Institute for Health and Care Excellence. (2000). Guidance on the extraction of wisdom teeth (TA1). NICE.

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When to Use TMA vs Stainless Steel Archwires

Orthodontic Archwires

Archwire selection should be based on the biomechanical requirements of each treatment stage rather than on wire material alone.

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Titanium-molybdenum alloy (TMA) and stainless steel (SS) are particularly useful during working and finishing stages because they provide substantially different combinations of stiffness, springback, formability, and friction.

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TMA has an elastic modulus intermediate between nickel-titanium and stainless steel, allowing greater activation with lower force levels. Stainless steel provides greater rigidity and dimensional stability, making it particularly useful when precise control of tooth position, torque, and arch form is required.
The clinical decision, therefore, is not simply whether TMA or stainless steel is "better," but which material provides the appropriate force system for the intended tooth movement.

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🔹 TMA vs Stainless Steel: Key Differences
Property TMA (β-Titanium) Stainless Steel
Stiffness Moderate High
Springback Good Moderate
Formability Excellent Good, but less forgiving
Force delivery Lower and more flexible Higher and more rigid
Friction Generally higher Generally lower
Loop and bend mechanics Highly suitable Suitable, but requires greater force
Root-control adjustments Excellent Excellent when rigid control is required
Finishing/detailing Useful when controlled flexibility is needed Preferred when maximum rigidity is required
Welding/auxiliary attachments Highly suitable Suitable
The mechanical distinction is clinically important. Experimental comparisons demonstrate that TMA has lower stiffness and bending moments than stainless steel of comparable dimensions, while maintaining useful springback and formability.

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🔹 When Should TMA Archwires Be Used?
TMA is particularly valuable when the clinician needs controlled flexibility combined with the ability to make permanent bends.

1. Individual tooth movement
TMA is well suited to individual tooth movements because its intermediate stiffness allows activation without producing the relatively high forces associated with similarly sized stainless steel wires. This makes it useful for auxiliaries, cantilevers, uprighting mechanics, and segmented mechanics.

2. Root positioning and controlled finishing
Rectangular TMA can be useful when root positioning or torque adjustments require a degree of flexibility that would make stainless steel excessively rigid.
It is particularly advantageous when a clinician needs to incorporate first-, second-, or third-order bends while maintaining a relatively moderate force system.

3. Loops and auxiliary mechanics
The excellent formability of β-titanium makes TMA appropriate for loops, closing mechanics, uprighting springs, cantilevers, and segmented archwires. Its ability to be manipulated and welded to auxiliaries further expands its clinical applications.

4. Situations requiring a more forgiving working wire
When a full-size stainless-steel archwire would generate excessive stiffness because of significant activation or tooth displacement, TMA can provide a more gradual force system while still allowing precise bends.

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🔹 When Should Stainless Steel Archwires Be Used?
Stainless steel is preferable when rigidity, dimensional stability, and low friction are priorities.

1. Space closure and sliding mechanics
Stainless steel is generally advantageous for sliding mechanics because its smooth surface and relatively low friction can reduce resistance at the bracket–archwire interface. The frictional behavior, however, depends on bracket material, ligation, angulation, wire dimensions, surface characteristics, and the presence of binding.

2. Maximum control of arch form
A rigid stainless-steel archwire is useful when the clinician wants to maintain or establish a specific arch form with minimal deformation.

3. Torque and finishing
Rectangular stainless steel is particularly useful during final torque expression, root control, arch coordination, and finishing, especially when the bracket prescription is expected to be expressed with minimal wire deformation.

4. Stabilization after active mechanics
Once the desired tooth positions have been achieved, stainless steel can provide a stable working platform for final detailing and coordination.

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🔹 TMA vs Stainless Steel: Which Should Be Used for Finishing?
There is no universal rule that finishing must be performed exclusively with one material.
A practical approach is:
Use TMA when finishing requires active bends, localized tooth movement, or controlled flexibility.
Use stainless steel when the primary objective is rigidity, arch-form control, torque expression, and maintaining already-corrected positions.
This distinction is particularly relevant with rectangular wires. A large rectangular TMA wire can provide substantial control while remaining more flexible than an equivalent stainless-steel wire. Conversely, stainless steel is advantageous when unwanted wire deformation would compromise the intended force system.

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🔹 Clinical Comparison by Treatment Objective
Clinical Objective Preferred Material Main Reason
Individual tooth movement TMA Controlled flexibility and good formability
Loops and cantilevers TMA Efficient activation with relatively moderate force levels
Sliding space closure Stainless steel Low friction and high rigidity
Arch-form control Stainless steel High stiffness and dimensional stability
Localized finishing bends TMA Excellent formability and controlled flexibility
Final torque and rigid finishing Stainless steel Maximum rigidity and torque expression

💬 Discussion
The principal clinical difference between TMA and stainless steel is their force–deflection behavior. Stainless steel has a higher elastic modulus and therefore resists deformation more strongly. TMA occupies an intermediate position between NiTi and stainless steel, allowing greater activation while producing lower stiffness.
However, material selection cannot be separated from wire dimension. Increasing the cross-sectional dimensions of a rectangular wire can markedly increase stiffness, meaning that a clinician should evaluate alloy and dimension together rather than assuming that every TMA or stainless-steel wire produces the same biomechanical response.
Friction is another relevant consideration. Stainless steel generally demonstrates favorable frictional characteristics, whereas TMA tends to exhibit greater surface roughness and friction. Nevertheless, friction alone should not determine archwire selection because binding, bracket angulation, ligation, wire size, and the overall force system can substantially influence clinical behavior.
Recent experimental evidence also indicates that environmental conditions may influence the mechanical behavior of β-titanium wires over time. Therefore, laboratory mechanical properties should be interpreted as material characteristics rather than direct predictors of individual clinical outcomes.

🎯 Clinical Recommendations
▪️ Choose TMA when controlled flexibility, extensive bends, loops, cantilevers, or localized tooth movement are central to the mechanics.
▪️ Choose stainless steel when rigidity, arch-form maintenance, low friction, space closure, or precise finishing is the primary objective.
▪️ For rectangular wires, select alloy and cross-sectional dimension together; changing either can substantially alter the force system.
▪️ Avoid selecting TMA solely because it is "softer." Its advantage is controlled flexibility with excellent formability, not simply lower stiffness.
▪️ During finishing, use TMA when additional active bending is required and stainless steel when rigid three-dimensional control is the priority.

✍️ Conclusion
TMA and stainless steel archwires are complementary rather than competing materials. TMA is particularly valuable when flexibility, springback, and formability are required, whereas stainless steel is advantageous when maximum rigidity, dimensional stability, low friction, and precise finishing are desired.
The most rational selection is therefore determined by the specific biomechanical objective, wire dimension, amount of activation, and stage of treatment rather than by a fixed sequence applicable to every patient.

📚 References

✔ Burstone, C. J., & Goldberg, A. J. (1980). Beta titanium: A new orthodontic alloy. American Journal of Orthodontics, 77(2), 121–132. https://doi.org/10.1016/0002-9416(80)90001-9
✔ Huffman, J., et al. (2026). The effect of pH on the mechanical properties of beta titanium orthodontic arch wires. European Oral Research.
✔ Kapila, S., & Sachdeva, R. (1989). Mechanical properties and clinical applications of orthodontic wires. American Journal of Orthodontics and Dentofacial Orthopedics, 96(2), 100–109. https://doi.org/10.1016/0889-5406(89)90251-5
✔ Kusy, R. P. (1997). A review of contemporary archwires: Their properties and characteristics. The Angle Orthodontist, 67(3), 197–207.
✔ Sernetz, F., & Franke, R. (2006). In-vitro evaluation of the material characteristics of stainless steel and beta-titanium orthodontic wires. European Journal of Orthodontics, 28(5), 487–492.
✔ Yıldırım, E., et al. (2017). Comparison of spring characteristics of titanium-molybdenum alloy and stainless steel. Journal of Clinical and Experimental Dentistry, 9(5), e620–e625.

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viernes, 14 de agosto de 2026

Temporomandibular Disorders in Children: Management Guide

Temporomandibular Disorders

Temporomandibular disorders (TMDs) in children and adolescents comprise a group of musculoskeletal and neuromuscular conditions involving the temporomandibular joint (TMJ), masticatory muscles, and associated structures.

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Although many pediatric patients have mild or transient symptoms, clinically significant TMD may cause pain, restricted mandibular function, headaches, and impairment of quality of life.

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Management in growing patients differs from that of adults because diagnosis must consider craniofacial growth, developing dentition, psychosocial factors, and systemic diseases.
Current pediatric recommendations favor an individualized, conservative, and reversible approach, reserving invasive procedures for selected cases with a specific diagnosis.

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Clinical Assessment Before Treatment
Management should begin with a structured assessment rather than treatment based solely on joint sounds or occlusal findings.

The evaluation should include:
▪️ Pain: location, duration, intensity, provoking factors, and functional impact.
▪️ Mandibular function: maximum opening, lateral excursions, protrusion, and movement asymmetry.
▪️ TMJ examination: tenderness, reproducible clicking or crepitation, and episodes of locking.
▪️ Masticatory muscles: assessment for localized or referred pain.
▪️ Medical history: trauma, inflammatory disease, headaches, sleep disturbances, and chronic pain conditions.
▪️ Psychosocial factors: anxiety, stress, pain-related disability, and other factors that may influence symptom persistence.
The international DC/TMD pediatric adaptations provide a developmentally appropriate framework for physical and psychosocial assessment. For adolescents, the INfORM recommendations define adolescence as 10–19 years and incorporate modifications to questionnaires and clinical assessment.

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Evidence-Based Management of Pediatric TMD
The primary treatment objective is not necessarily elimination of every joint sound. Instead, management should focus on pain reduction, functional recovery, reduction of relevant risk factors, and preservation of quality of life.

1. Education and Self-Management
Education is an important first-line intervention. Children and caregivers should understand the nature of the disorder, expected clinical course, and factors that may aggravate symptoms.

Depending on the presentation, recommendations may include:
▪️ Temporarily reducing excessive chewing and extreme mandibular movements.
▪️ Avoiding repetitive jaw overloading during painful episodes.
▪️ Modifying dietary consistency when chewing is painful.
▪️ Addressing clinically relevant parafunctional behaviors.
▪️ Encouraging appropriate sleep and general health habits.
The objective is to reduce mechanical and behavioral aggravation without unnecessarily restricting normal mandibular function.

2. Physical Therapy
Physical therapy and therapeutic exercise may be appropriate for patients with muscular pain, restricted mandibular mobility, or functional impairment.
Depending on the diagnosis, therapy can include therapeutic exercises, controlled mandibular movement, manual therapy, and other physical modalities. Evidence from TMD populations supports multimodal conservative care, although pediatric-specific treatment evidence remains comparatively limited.
Treatment should therefore be individualized rather than applying a standardized exercise protocol to every pediatric patient.

3. Pharmacological Management
Analgesic or anti-inflammatory medication may be considered for short-term management of acute pain when clinically indicated.
Medication selection, dosage, duration, contraindications, and interactions must be determined according to the patient's age, weight, medical history, and current medications.
Pharmacological therapy should generally complement, rather than replace, appropriate behavioral and physical management.

4. Occlusal Splints
Occlusal appliances may be considered in selected children or adolescents, particularly when pain or parafunctional loading is clinically relevant.
Because patients are still growing and their dentition is changing, appliances require careful selection, monitoring, and follow-up. Treatment should avoid producing unwanted occlusal or skeletal changes.
Importantly, current pediatric guidance does not support irreversible occlusal adjustment as routine TMD treatment.

5. Psychological and Behavioral Interventions
Pediatric TMD should be considered within a biopsychosocial framework. Pain-related distress, anxiety, stress, sleep problems, and maladaptive coping may contribute to symptom persistence or disability.
The pediatric DC/TMD Axis II adaptation specifically incorporates assessment of psychosocial domains such as anxiety, depression, catastrophizing, sleep, stress, and resilience.
When clinically relevant, behavioral or psychological intervention should therefore be integrated into multidisciplinary care rather than treating the joint in isolation.

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When Is Imaging Indicated?
Imaging should answer a specific diagnostic question rather than be performed routinely in every child with TMD symptoms.
MRI is particularly valuable when assessment of the articular disc, joint effusion, synovitis, or other soft-tissue abnormalities is clinically important. Other imaging modalities may be appropriate when osseous abnormalities, trauma, degenerative changes, or developmental alterations are suspected.
Children with juvenile idiopathic arthritis (JIA) require particular consideration because TMJ inflammation may affect mandibular growth. In these patients, evaluation and management should be coordinated with the appropriate medical specialists.

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When Should Referral or Invasive Treatment Be Considered?
Referral to a clinician experienced in pediatric TMD and orofacial pain is appropriate when there is:

▪️ Persistent or progressive pain.
▪️ Significant limitation of mandibular movement.
▪️ Recurrent locking.
▪️ Suspected inflammatory TMJ disease.
▪️ Facial asymmetry or possible growth disturbanc
e. ▪️ ▪️ Significant functional impairment.
▪️ Failure of an appropriately implemented conservative approach.
▪️ Diagnostic uncertainty.
Irreversible occlusal procedures, orthodontic treatment specifically intended to treat TMD, and surgery should not be routine first-line treatments in growing patients. The AAPD notes that evidence supporting these irreversible approaches in children is limited.
Minimally invasive procedures may have a role in carefully selected cases, but evidence from predominantly adult populations cannot automatically be extrapolated to children and adolescents. Recent systematic reviews suggest benefits of arthrocentesis for selected symptomatic TMJ disorders, but pediatric indications require individualized specialist assessment.

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Follow-Up and Monitoring
Follow-up should evaluate clinical improvement rather than imaging changes alone.

Relevant outcomes include:
▪️ Pain intensity and frequency.
▪️ Maximum mandibular opening.
▪️ Functional limitations.
▪️ Locking episodes.
▪️ Muscle and TMJ tenderness.
▪️ Quality-of-life impact.
▪️ Changes in facial symmetry or mandibular growth when clinically relevant.
In growing patients, periodic reassessment is particularly important because the clinical significance of a TMJ disorder may change with skeletal and dental development.

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💬 Discussion
The management of temporomandibular disorders in children and adolescents remains an area in which pediatric-specific evidence is less extensive than adult evidence. A systematic review published by Christidis et al. found limited evidence supporting specific pediatric treatment protocols, emphasizing the need for higher-quality clinical studies.
More recent international consensus initiatives have improved diagnostic standardization by adapting DC/TMD procedures to children and adolescents. However, further validation across developmental stages remains necessary.
Consequently, current clinical management should emphasize reversible, conservative, multimodal treatment, with escalation determined by diagnosis, symptom severity, functional impairment, growth considerations, and response to initial therapy. This approach is consistent with the current AAPD best-practice recommendations.

🎯 Clinical Recommendations
1. Confirm the diagnosis before initiating irreversible treatment.
2. Prioritize reversible and conservative interventions in growing patients
3.Assess psychosocial and sleep-related factors when pain is persistent or disproportionate to physical findings.
4. Investigate systemic inflammatory disease, particularly when TMJ dysfunction is accompanied by relevant medical findings.
5. Use imaging selectively according to the diagnostic question.
6. Refer persistent, progressive, or functionally significant cases to an experienced pediatric TMD or orofacial pain team.

✍️ Conclusion
Management of temporomandibular disorders in children and adolescents should be individualized, diagnosis-driven, and compatible with ongoing craniofacial growth. Current evidence supports a conservative and reversible first-line strategy, incorporating education, behavioral modification, physical therapy, appropriate pharmacological management, and selected occlusal appliances.
The clinician should avoid attributing pediatric TMD solely to occlusion and should not routinely employ irreversible occlusal, orthodontic, or surgical procedures. Persistent symptoms, functional limitation, suspected inflammatory disease, or growth abnormalities warrant specialist evaluation and multidisciplinary management.

📚 References

✔ American Academy of Pediatric Dentistry. (2025). Temporomandibular disorders in children and adolescents, including those with special health care needs. The Reference Manual of Pediatric Dentistry, 2025–2026, 516–526.
✔ Christidis, N., Lindström Ndanshau, E., Sandberg, A., & Tsilingaridis, G. (2019). Prevalence and treatment strategies regarding temporomandibular disorders in children and adolescents—A systematic review. Journal of Oral Rehabilitation, 46(3), 291–301. https://doi.org/10.1111/joor.12759
✔ Dinsdale, A., Costin, B., Dharamdasani, S., Page, R., Purs, N., & Treleaven, J. (2022). What conservative interventions improve bite function in those with temporomandibular disorders? A systematic review using self-reported and physical measures. Journal of Oral Rehabilitation, 49(4), 456–475. https://doi.org/10.1111/joor.13307
✔ Rongo, R., Ekberg, E. C., Nilsson, I. M., Al-Khotani, A., Alstergren, P., Conti, P. C. R., Durham, J., Goulet, J. P., Hirsch, C., Kalaykova, S. I., Kapos, F. P., Komiyama, O., Koutris, M., List, T., Lobbezoo, F., Ohrbach, R., Peck, C. C., Restrepo, C., Rodrigues, M. J., Sharma, S., Svensson, P., Visscher, C. M., Wahlund, K., & Michelotti, A. (2021). Diagnostic criteria for temporomandibular disorders (DC/TMD) for children and adolescents: An international Delphi study—Part 1—Development of Axis I. Journal of Oral Rehabilitation, 48(7), 836–845. https://doi.org/10.1111/joor.13175
✔ Rongo, R., et al. (2022). Diagnostic criteria for temporomandibular disorders in children and adolescents: An international Delphi study—Part 2—Development of Axis II. Journal of Oral Rehabilitation, 49(5), 541–552. https://doi.org/10.1111/joor.13301
✔ Rongo, R., et al. (2023). Diagnostic criteria for temporomandibular disorders—INfORM recommendations: Comprehensive and short-form adaptations for adolescents. Journal of Oral Rehabilitation, 50(7), 583–593. https://doi.org/10.1111/joor.13488
✔ Tang, Y. H., van Bakelen, N. B., Gareb, B., & Spijkervet, F. K. L. (2025). Arthrocentesis versus conservative treatments for temporomandibular joint disorders: A systematic review with meta-analyses and trial sequential analyses. Journal of Cranio-Maxillofacial Surgery.

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jueves, 13 de agosto de 2026

Best Archwire Sequence for Deep Bite Correction

Deep Bite

Deep bite correction requires more than simply leveling the curve of Spee. The appropriate biomechanics depend on the etiology of the deep bite, facial pattern, incisor display, periodontal condition, and desired vertical tooth movement.

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Treatment may involve anterior intrusion, posterior extrusion, incisor proclination, or a combination of these movements.

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For patients in whom true anterior intrusion is indicated, the archwire sequence should progress from flexible alignment wires toward stiffer rectangular wires that permit increasingly precise three-dimensional control. However, there is no single archwire sequence that is universally superior for every deep-bite patient.
Importantly, evidence comparing complete archwire sequences specifically for deep-bite correction remains limited. Therefore, the following sequence should be considered an evidence-informed clinical framework, rather than a rigid protocol.

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🔹 Recommended Archwire Sequence
A practical sequence for fixed-appliance treatment is:
Treatment Phase Suggested Archwire Primary Objective
Initial Alignment 0.012–0.014 in NiTi Gentle alignment and leveling
Progressive Alignment 0.016–0.018 in NiTi Continue alignment and begin leveling
Early Rectangular Control 0.016 × 0.022 or 0.017 × 0.025 in NiTi Improve torque and vertical control
Deep-Bite Correction Rectangular NiTi, TMA, or segmented intrusion arch Intrusion and leveling according to diagnosis
Working Phase 0.019 × 0.025 in stainless steel Space closure and three-dimensional control
Finishing 0.017 × 0.025 or 0.019 × 0.025 in stainless steel Torque, detailing, and occlusal finishing
The exact dimensions should be adapted to bracket prescription, slot size, initial malocclusion, periodontal limits, and anchorage requirements.

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1. Initial Alignment: Round NiTi
A 0.012–0.014-inch NiTi wire is appropriate when significant crowding or irregularity is present. A subsequent 0.016–0.018-inch NiTi wire can provide progressive alignment and leveling.
The objective at this stage is not to force rapid deep-bite correction. Excessive early leveling may produce unwanted incisor proclination or posterior effects before the clinician has established adequate anchorage.
Clinical trials evaluating archwire sequences have demonstrated that several commonly used sequences can achieve alignment, without establishing one universal sequence as clearly superior.

2. Rectangular NiTi: Transition to Three-Dimensional Control
Once sufficient alignment has been achieved, a rectangular NiTi archwire can be introduced. Common choices include 0.016 × 0.022-inch or 0.017 × 0.025-inch NiTi, depending on the appliance system.
This transition is important because deep-bite correction frequently requires greater control of incisor inclination and vertical position, rather than simple alignment.

3. Active Deep-Bite Correction
This is the critical phase. The wire selected should reflect the mechanism of correction, not simply the severity of the overbite.
When anterior intrusion is indicated, a segmented intrusion arch, three-piece arch, or skeletal anchorage-assisted mechanics may provide better control than relying exclusively on continuous archwire leveling.
Burstone emphasized that successful intrusion depends on appropriate force magnitude, force location relative to the center of resistance, posterior anchorage control, and minimizing unwanted posterior eruption.
True incisor intrusion is achievable, although the average amount is relatively modest. A systematic review reported approximately 1.46 mm of maxillary incisor intrusion and 1.90 mm of mandibular incisor intrusion with segmented mechanics.

4. TAD-Assisted Intrusion When Maximum Vertical Control Is Required
Temporary anchorage devices (TADs) can be particularly useful when posterior anchorage must be preserved or when substantial anterior intrusion is required.
Recent evidence indicates that TAD-supported mechanics may produce slightly greater incisor intrusion and deep-bite reduction than conventional intrusion mechanics. However, the magnitude of the difference is generally modest and the certainty of evidence remains limited.
Therefore, TADs should not be considered mandatory for every deep bite. They are most useful when the biomechanical objective cannot be achieved predictably with conventional anchorage.

5. Working and Finishing Wires
After the vertical relationship has been corrected, a 0.019 × 0.025-inch stainless steel archwire is commonly appropriate for the working phase.
This wire provides high control of torque, angulation, arch form, and space closure and is particularly useful when extraction mechanics are involved.
A smaller rectangular stainless-steel wire may be preferable during finishing when greater flexibility is desirable. Final wire selection should be based on the amount of detailing required rather than following a predetermined sequence.

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🔹 How Should the Sequence Change According to the Deep Bite?
Clinical Situation Preferred Emphasis Practical Approach
Deep bite with excessive incisor display Anterior intrusion Rectangular control + intrusion mechanics
Deep bite with low facial height in a growing patient Posterior eruption/extrusion may be acceptable Leveling or bite-opening mechanics
Deep bite with excessive lower-incisor proclination risk Avoid uncontrolled leveling Segmental mechanics and anchorage control
Deep bite with gummy smile Maxillary incisor intrusion Intrusion mechanics ± TADs
Extraction deep bite with retroclined incisors Intrusion + controlled retraction Three-piece or segmental mechanics
Adult deep bite requiring posterior anchorage preservation Controlled anterior intrusion TAD-supported or segmented mechanics
The distinction is clinically important because overbite reduction does not necessarily mean true incisor intrusion. Continuous arch mechanics may reduce overbite partly through molar extrusion and mandibular rotation, whereas segmented mechanics can achieve greater anterior intrusion with less posterior extrusion.

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💬 Discussion
The concept of a "best" archwire sequence should therefore be interpreted as a biomechanical progression rather than a fixed series of wire dimensions.

A conventional sequence such as:
Round NiTi → Rectangular NiTi → Rectangular stainless steel
is adequate for many routine fixed-appliance cases. However, a patient with a clinically significant deep bite may require an additional vertical-control phase between rectangular NiTi and the final working archwire.

For example:
0.012–0.014 NiTi → 0.016 NiTi → 0.016 × 0.022 NiTi → intrusion mechanics → 0.019 × 0.025 stainless steel → finishing
may be more appropriate than attempting to correct the entire deep bite through progressive continuous-arch leveling.
Recent randomized evidence also suggests that reverse-curve mechanics can correct deep overbite but may influence lower-incisor proclination depending on wire design and torque. A 2025 randomized clinical study found comparable true intrusion among tested reverse-curve systems, while anterior crown torque substantially affected mandibular incisor proclination.
Consequently, wire selection should follow the intended tooth movement. The objective is not simply to use a larger archwire, but to generate the desired vertical and sagittal movements while controlling reciprocal effects.

🎯 Clinical Recommendations
1. Diagnose the source of the deep bite before selecting the archwire. Determine whether correction should primarily involve intrusion, extrusion, incisor inclination, or a combination.
2. Use flexible NiTi wires for initial alignment, but avoid relying on progressive continuous-arch leveling as the sole strategy when significant anterior intrusion is required.
3. Introduce rectangular control before active intrusion when incisor torque and root position need to be managed.
4. Consider segmented intrusion mechanics or TADs when posterior anchorage preservation is critical or when predictable anterior intrusion is the primary objective.
5. Use stainless steel rectangular wires for working and finishing control, particularly when space closure, torque expression, and detailed tooth positioning are required.
6. Do not equate overbite reduction with true intrusion. Evaluate the vertical changes of incisors and posterior teeth when treatment mechanics are being assessed.

✍️ Conclusion
The most appropriate archwire sequence for deep bite correction is individualized according to the vertical problem and the desired tooth movement. A practical sequence progresses from round NiTi alignment to rectangular NiTi control, dedicated intrusion mechanics when indicated, and rectangular stainless steel for working and finishing.
Current evidence supports the use of controlled intrusion mechanics, particularly when preservation of posterior anchorage is important. TAD-assisted intrusion may provide additional vertical control, although the available evidence does not justify considering it universally superior for every patient.
The key clinical principle is therefore biomechanical control rather than a predetermined wire sequence: the archwire should be selected according to the movement required to correct the patient's specific deep-bite phenotype.

📚 References

✔ Burstone, C. R. (1977). Deep overbite correction by intrusion. American Journal of Orthodontics, 72(1), 1–22. https://doi.org/10.1016/0002-9416(77)90121-X
✔ Weiland, F., Bantleon, H. P., & Droschl, H. (1992). The orthodontic treatment of deep bite in adults—a comparison of the straight wire appliance and the segmented arch technique. American Journal of Orthodontics and Dentofacial Orthopedics, 101(5), 403–410. https://doi.org/10.1016/0889-5406(92)70114-F
✔ Ng, J., Major, P. W., Heo, G., & Flores-Mir, C. (2005). True incisor intrusion attained during orthodontic treatment: A systematic review and meta-analysis. American Journal of Orthodontics and Dentofacial Orthopedics, 128(2), 212–219. https://doi.org/10.1016/j.ajodo.2004.04.025
✔ Mandall, N. A., Lowe, C., Worthington, H. V., Sandler, J., Derwent, S., Abdi-Oskouei, M., & Ward, S. (2006). Which orthodontic archwire sequence? A randomized clinical trial. European Journal of Orthodontics, 28(6), 561–566. https://doi.org/10.1093/ejo/cjl030
✔ Atalla, A. I., AboulFotouh, M. H., Fahim, F. H., & Foda, M. Y. (2020). Effectiveness of orthodontic mini-screw implants in adult deep bite patients during incisor intrusion: A systematic review. Contemporary Clinical Dentistry, 10(2), 372–381. https://doi.org/10.4103/ccd.ccd_618_18
✔ Sosly, R., Mohammed, H., & Riedy, C. A. (2020). Effectiveness of miniscrew-supported maxillary incisor intrusion in deep-bite correction: A systematic review and meta-analysis. The Angle Orthodontist, 90(2), 291–304.
✔ Bardideh, E., Tamizi, G., Shafaee, H., Rangrazi, A., Ghorbani, M., & Kerayechian, N. (2023). The effects of intrusion of anterior teeth by skeletal anchorage in deep bite patients: A systematic review and meta-analysis. Biomimetics, 8(1), 101. https://doi.org/10.3390/biomimetics8010101
✔ Lee, W. Y., Othman, S. A., & Sivarajan, S. (2026). Anterior intrusion mechanics for adult deep bite correction: A systematic review of randomised controlled trials. BMC Oral Health. https://doi.org/10.1186/s12903-026-09120-w
✔ Shakhtour, F., & Al-Nimri, K. (2025). Comparison between effects of reverse curve of Spee nickel titanium archwire and stainless steel archwires with and without torque on the lower incisors in deep overbite treatment: A randomized control study. The Angle Orthodontist, 95(1), 27–34. https://doi.org/10.2319/051524-376.1

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